* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
.course-list nav {
  width: 100%;
  height: 0.88rem;
  background-color: #fff;
  padding: 0 0.3rem 0 0;
  display: flex;
  position: fixed;
  top: 0;
  z-index: 2;
}
.course-list nav a {
  flex: 1;
  width: 1rem;
  max-width: 1rem;
  min-width: 1rem;
  display: block;
}
.course-list nav img {
  height: 40%;
  display: block;
  float: left;
  margin: 0.26rem;
}
.course-list nav p {
  flex: 8;
  font-size: 0.3rem;
  line-height: 0.88rem;
}
.course-list main {
  margin-top: 1.2rem;
}
.course-list main > ul {
  width: 90%;
  margin: 0 auto;
}
.course-list main > ul li {
  width: 100%;
  height: 3rem;
  margin-bottom: 0.4rem;
  background-color: #eee;
  position: relative;
  overflow: hidden;
}
.course-list main > ul li span img {
  width: 100%;
}
.course-list main > ul li span:first-of-type {
  font-size: 0.3rem;
}
.course-list main > ul li span:first-of-type p:first-of-type {
  font-size: 0.26rem;
  padding-top: 0.16rem;
  padding-bottom: 0.4rem;
}
.course-list main > ul li span:last-of-type {
  display: inline-block;
  width: 3rem;
  height: 4rem;
  background-color: rgba(255, 255, 255, 0.6);
  transform: rotateZ(22deg);
  position: absolute;
  top: -0.2rem;
  right: -1rem;
}
.course-list main .related-video {
  width: 90%;
  margin: 0 auto;
}
.course-list main .related-video .title {
  display: flex;
  margin: 0.6rem 0 0.4rem 0;
}
.course-list main .related-video .title span {
  flex: 1;
  font-size: 0.3rem;
}
.course-list main .related-video .title span p {
  display: inline-block;
}
.course-list main .related-video .title span img {
  width: 0.24rem;
  vertical-align: -5%;
  margin-left: 0.1rem;
}
.course-list main .related-video .title span:last-of-type {
  text-align: right;
}
.course-list main .related-video .content ul {
  display: flex;
  flex-wrap: wrap;
}
.course-list main .related-video .content ul li {
  flex: 1;
  width: 47.5%;
  max-width: 47.5%;
  min-width: 47.5%;
  margin-bottom: 0.5rem;
}
.course-list main .related-video .content ul li:nth-of-type(2n) {
  margin-left: 5%;
}
.course-list main .related-video .content ul li .pic {
  width: 100%;
}
.course-list main .related-video .content ul li .pic img {
  width: 100%;
}
.course-list main .related-video .content ul li .text {
  font-size: 0.2rem;
}
.course-list main .related-video .content ul li .text > p {
  margin-bottom: 0.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.course-list main .related-video .content ul li .text img {
  width: 0.4rem;
  vertical-align: -30%;
}
